Luminance / Radiance Probes

Quantify light and color from displays and other emitting surfaces.

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Optic probes for measuring radiance or irradiance

To be able to match the best optical probe to customer’s needs, it is important to know what the client has to measure, which quantities he needs to deliver, how wide a spectral range he has to measure in and which measuring point diameter he will be satisfied with.

GL Optic offers variety of optical probes for radiometric measurements. They differ in spectral range, degree of cosine correction and a type of optic fiber..

Ready-set-go

Each complete set includes a measuring probe, a fiber optic cable, and adapter for a dedicated spectrometer. Includes calibration traceable to National Laboratories.

Smart Detection

All GL Optic Spectrometers include smart system of detection that automatically detects a new probe and loads the appropriate calibration file.

Extended Spectral Range

Constructed of high transmission quartz fiber optics, these optical probes can cover a broad spectral range from UV to NIR (200-1050nm).

GL Opti Probe 1.0.10 Luminance Usage

This accessory is intended for measuring luminance [cd/m2] of flat LCD and OLED panels and plasma FPDs. Typical devices to be tested are: television screens, computer monitors, avionics displays and other electronic displays and where there is a need to measure reflective surfaces – also walls and workplaces, projection screens and signs.

This optic probe measures the light emitted in a particular direction by a given spot on the surface of a relatively large or extended source. The measuring probe can be installed on a tripod for distance measurements or directly on a screen with the use of a special stripe for contact measurements. The optic probe connects to GL Spectis 1.0 or GL Spectis 1.0 Touch. The probe comes with polymer fiber optic cable. Usable spectral range: 400-730 nm.

GL Opti Probe 1.0.10 Luminance Specifications

GL OPTI PROBE 1.0.10 luminance
Measuring point diameter10mm
Spot sizein 1 m distance – approx. 5 cm
Spectral range400–730 nm (may be affected by spectrometer used)
Measuring probe size44 x 62 x 14 mm
Type of fiber optic cablePolymer
Fiber optic cable diameter⌀1.0mm
Fiber optic cable length1.5m
Measurement uncertainty(x,y) +/- 0.002

GL Opti Probe 1.0.11 Luminance Usage

This optic probe has a pen shape with just 1 mm measuring point diameter and comes with a flexible fiber optic cable. It is especially useful when it is necessary to measure small areas. The optic probe connects to GL Spectis 1.0 or GL Spectis 1.0 Touch.

This accessory is intended for measuring luminance [cd/m2] of flat LCD and OLED panels and plasma FPDs. Typical devices to be tested are: signal indicators, avionics and other electronic displays. This optic probe measures the light emitted in a particular direction by a given spot on the surface. The probe comes with polymer fiber optic cable. Usable spectral range: 400-730 nm.

GL Opti Probe 1.0.11 Luminance Specifications

GL OPTI PROBE 1.0.11 luminance
Measuring point diameter⌀1.0mm
Spot sizein 5mm distance – approx. 3.25mm
Spectral range400–730 nm (may be affected by spectrometer used)
Measuring probe size⌀7 x 60mm
Type of fiber optic cablePolymer
Fiber optic cable diameter⌀1.0mm
Fiber optic cable length1.5m
Measurement uncertainty(x,y) +/- 0.002

GL Opti Probe 1.0.12 Luminance Usage

Luminance measuring telescope with optic fiber ensures perfectly parallel beam of observation. Can be fitted on tripod. Spot diameter 8mm at distance 0.5 m. Spectral range 400-1050nm

GL Opti Probe 1.0.12 Luminance Specifications

GL OPTI PROBE 1.0.12 luminance
Measuring point diameter⌀1.0mm
Spot sizein 5mm distance – approx. 3.25mm
Spectral range400–730 nm (may be affected by spectrometer used)
Measuring probe size⌀7 x 60mm
Type of fiber optic cablePolymer
Fiber optic cable diameter⌀1.0mm
Fiber optic cable length1.5m
Measurement uncertainty(x,y) +/- 0.002

GL Opti Probe 5.0.10 Usage

Luminance probe for point measurement of flat displays, LCD, LED, OLED panels, projection displays and indicating lights. The set includes a measuring probe, quartz fiber optics and an adapter with a coder for SPECTIS 1.0 series Spectrometer as well as a counterweight with a strap for hanging over the measured screen.

The frame of the probe is ready to accept a standard photographic tripod. This probe covers the full spectral range from UV to IR within the range of the used spectrometer. N.A.=0.20

GL Opti Probe 5.0.10 Specifications

GL OPTI PROBE 5.0.10 luminance
Measuring point diameter10mm
Spot sizein 1 m distance – approx. 5 mm
Spectral range340–780 nm (may be affected by spectrometer used)
Measuring probe size44 x 62 x 14 mm
Type of fiber optic cableQuartz
Fiber optic cable diameter⌀1.0mm
Fiber optic cable length1.5m
Measurement uncertainty(x,y) +/- 0.002

GL Opti Probe 5.0.51 Usage

Pen type luminance probe for point measurement of flat displays, LCD, LED OLED panels, projection displays and indicating lights. The set includes a measuring probe, quartz fiber optics as well as an adapter with a coder for SPECTIS 5.0, 6.0 and 8.0 spectrometers. This probe covers the full spectral range from UV to IR within the range of the used spectrometer. N.A.=0.20

GL Opti Probe 5.0.51 Specifications

GL OPTI PROBE 5.0.51 luminance
Measuring point diameter⌀ 1.0mm
in 1 m distance – approx. 5 mm
200–1050 nm (may be affected by spectrometer used)
Measuring probe size⌀11 x 100mm
Type of fiber optic cableQuartz
Fiber optic cable diameter⌀1.0mm
Fiber optic cable length1.5m
Measurement uncertainty(x,y) +/- 0.002

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